Answer:
(5x-2)(5x+2)
Step-by-step explanation:
Differences of squares is basically (a2-b2) = (a-b) (a+b)
a = 5x and b = 2 in this case
Brainliest is appreciated :)
A customer pay 72$ for 18 sandwiches. If each sandwich cost the same amount , what is the cost per sandwich, in dollars?
Answer:
Each sandwich costs 4$.
Step-by-step explanation:
To find the answer we will divide 72$ by 18 and we get 4$.
The number of sandwiches and the total price of sandwiches are directly proportional.
Cost of 18 sandwiches = $72
Cost of 1 sandwich = $72/18
= $4
Hence the cost of 1 sandwich is $4.
A circular garden is 20 feet across; a gardener wants to cover it with sod. If each sod piece is two square feet, how much sod will be needed?
Answer:
750
Step-by-step explanation:
What's the area of the circle r=1.2 yd plss help
Answer: 1.44pi
Step-by-step explanation: just plug in 1.2 for r in a=pi(r^2)
A dog trainer compared mean numbers of lessons for two
groups of dogs to learn a new trick.
Answer:
D
Step-by-step explanation:
A cylinder has a height of 8 feet and a radius of 3 feet. What is its volume? Use ≈ 3.14 and round your answer to the nearest hundredth.
Answer:
226.08 ft
Step-by-step explanation:
using the formula for volume of cylinder
πr²h
3.14× 3²×8= 226.08 ft
Given f(x)=3(x-1)(x-7) what is the minimum output value of the function
Answer:
-27
Step-by-step explanation:
f(x) = 3(x-1)(x-7)
= (3x-3)(x-7)
= 3x^2 - 24x + 21
when f(x) = 0, x = 7 or 1
x-intercept of vertix of the graph = (7+1 )/ 2 = 4
f(x) attains it's minimum when x = 4
The minimum output value = 3(4-1)(4-7) = -27
A class has $90 to spend on a field trip. The field trip costs $2.50 per person and there will be 5 chaperones on the trip. One student used the inequality 90 greater-than 2.50 (x + 5) to find x, the number of students that the field trip budget could accommodate. Which best describes the error in the student’s inequality?
The expression representing the cost should be 2.50 (5 x).
The expression representing the cost should be 2.50 (x + 5 x).
The inequality symbol should be Greater-than-or-equal-to instead of > since up to and including $90 may be spent.
The inequality symbol should be Less-than-or-equal-to instead of > since less than or equal to $90 may be spent.
Answer:
The inequality sign is not correct because the > symbol means greater than. However, up to and including $90 can be spent so the inequality sign should be ≥ (greater than or equal to).
The best description of the error in the student's inequality is; The inequality symbol should be Greater-than-or-equal-to instead of > since up to and including $90 may be spent.
What is the representation of the inequality?We are told that;
Amount for the class to spend = $90
Cost of field trip = $2.5 per person
Number of persons on the trip = 5 persons
Inequality used by a student is;
90 > 2.5(x + 5)
The inequality sign used above is not correct because the they have $90 to spend and so the inequality sign should be ≥ (greater than or equal to).
Read more about Inequality at; https://brainly.com/question/25275758
The Johnson family went out to lunch.
• The meal cost $46.72.
. The sales tax was 8% of the cost of the meal.
• The tip was 15% of the meal and sales tax.
• There are 4 people in the Johnson family.
How much did the meal cost per person, including sales tak and tip?
A. $14.00
B. $14.50
C. $14.95
D. $15.25
Answer:
14.50
Step-by-step explanation:
A shopper drives from the mall at point M to the post office located at point P. What distance does the shopper drive?
Part A: Explain the steps you would take to find the distance.
Part B: What distance does the shopper drive?
Answer:
Step-by-step explanation:
Part A: I would count the boxes from point M to point P.
Part B: The shopper drive 12 m.
The distance between the mall and the post office is 13 meters.
What is the distance between two points?It is the measure of distance between the two points and is known as length. The length is measured in meters generally.
Let one point be (x, y) and another point be (h, k). Then the distance between the points will be given as,
D² = (x - h)² + (y - k)²
From the diagram, the points are M(2, 5) and P(7, 17). Then the distance between the mall and the post office is calculated as,
MP² = (7 - 2)² + (17 - 5)²
MP² = 5² + 12²
MP² = 25 + 144
MP² = 169
MP = 13
Learn more about the distance between two points here:
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I got 0.2 but that’s not an option. please help
This is impossible. The answer is 0.2. Tell your teacher about the impossible problem.
hat is the value of x rounded to the nearest hundredth?
Question 5 options:
9
3
11
5
Answer:
3 might be wrong
Step-by-step explanation:
2
(✓7) - 4x4=9
✓9
3
Use substitution. What is the solution to the system of equations?
y=1/2x+2
2y=x+4
Answer: Infinitely many solutions.
Step-by-step explanation:
[tex]y=\frac{1}{2}x+2\\2y=x+4\\[/tex]
Use [tex]\frac{1}{2} x+2[/tex] for y in [tex]2y=x+4[/tex]
[tex]2(\frac{1}{2}x+2)=x+4\\x+4=x+4\\x-x = 4-4\\0=0[/tex]
Infinitely many solutions.
A rectangular parking lot measures 40 m x 30 m.
How much distance can you save by cutting
across the parking lot instead of walking all the
way around it from A to C?
This is Grade 8 Math Pythagorean theorem
⚠️THIS IS DUE TODAY⚠️ USE DISTRIBUTIVE PROPERTY
Answer:
4x + 8
-45 - 5x
7x - 21
Step-by-step explanation:
For the first one
4(x + 2)
for distributive property you multiply the number or symbol next to the outside of the parenthesis, by everything inside the parenthesis.
4(x+2)
4*x = 4x
4*2 = 8
So, this is 4x + 8
-5(9+x)
-5*9= -45
-5*x=-5x
So, this is -45 - 5x
7(x-3)
7*x= 7x
7*-3= -21
This will be 7x - 21
Hope this helps!!
-Ketifa
Executives from Six Flags, a well-known amusement park chain, had interest in constructing a Six Flags theme park in a location near Ames city limits. Experts believed that approximately 15% of the surrounding population would be interested in becoming season ticket holders. A random sample of 500 residents of Story County was collected (of the approximately 80,000 residents of Story County). Of the 500 people sampled, 124 said that they would be interested in purchasing season tickets to a Six Flags in Ames. Select the best description of the sample.
Answer:
Random sample of 500 residents of Story County
Step-by-step explanation:
SAMPLE can be defined as the process in which some group of people are randomly selected from a large population for the sole aim of carrying out statistical analysis that will represent the whole population at large instead of carryingout the SAMPLE on each person.
Therefore based on the information given the best description of the SAMPLE will be the 500 RESIDENT OF STORY COUNTY reason been that we were told that a random SAMPLE of the 500 residents of Story County were collected which in turn represent 80,000 of the residents of Story County at large.
A Circular pool has diameter of 24 feet what's the area of the cover - 452.16 square feet - 75.36 square feet - 150.72 square feet - 1,808.64 square feet
Answer: 452.16 square feet
Step-by-step explanation:
The formula that is used to calculate the area of a circle is given as:
= πr²
where π = 3.14
r = Diameter/2 = 24/2 = 12
Area = πr²
= 3.14 × 12²
= 3.14 × 144
= 452.16 feet²
Therefore, the answer is 452.16 square feet.
WILL GIVE BRAINLIEST
Answer:
They only intersect once. (Correct letter is B)
Step-by-step explanation:
Slope Intercept Form:
2x - 4y = 3
-2x -2x
________
-4y = -2x + 3
Switch the signs of all of the numerals since you cannot have a negative 'y' value.
4y = 2x - 3
---- ---------
4 4
y= 1/2x - 3/4
-----------------------------------------------------------------------------------------------------------------
7y - 5x = 8
+5x +5x
----------------
7y = 5x + 8
---- ---------
7 7
y= 5/7x + 1 1/7
-----------------------------------------------------------------------------------------------------------------
After graphing the lines, you then can see that the lines only ever intersect once.
whats 2 other ways to write this equation:
40 = 19+7x
Answer:
1: 7x+19=40
2: 19+7x=40
Step-by-step explanation:
There is a line that includes the point (3, 3) and has a slope of 4. What is its equation in
slope-intercept form?
Answer:
y = 4x - 9Step-by-step explanation:
The equation in point-slope form with slpope of m and including point (x₁,y₁) is:
y - y₁ = m(x - x₁)
m = 4
(3, 3) ⇒ x₁ = 3, y₁ = 3
So:
y - 3 = 4(x - 3) ← the point-slope form
y - 3 = 4x - 12 {add 3 to both sides}
y = 4x - 9 ← the slope-intercept form
A. 70 degrees
B. 140 degrees
C. 250 degrees
D. 110 degrees
The measure of the angle with variable x is 70 degrees.
TangentsTangent which meet at the same point are equal in lengthThe two tangent sides are equalThe two tangents forms an angle x. The angle x is opposite the arc angle 250 degrees.
∠x = 250 - (360 - 250)/ 2
∠x = 250 - 110 / 2
∠x = 140 / 2
∠x = 70°
Therefore, ∠x = 70 degrees.
learn more on circle theorem here : https://brainly.com/question/24225426?referrer=searchResults
PLEASE BE QUICK!
sin 47=_____
Write your answer as an integer or as a decimal rounded to the nearest hundredth.
Geometry 10th Grade. Help but only with right answers don't waste the answers
Answer:
the last one, d
Step-by-step explanation:
simplify it and you get x+3, y+1 which is the translation on the graph.
Only correct, and relevant answers please :)
Answer:
Answer is A hope this helps :)
Step-by-step explanation:
Does the following data best fit a linear, quadratic or exponential model?
{(0, 1), (1, 3), (2, 10), (3, 27)}
Directions Find the value of each variable
Answer:
X= 2 sqrt of 7
Y=2 sqrt of 7
Step-by-step explanation:
I just know the answer srry
Jacob is planting flowers in his yard. He goes to a nursery to purchase flowers, and he decides to purchase petunias and sunflowers. Each petunia plant costs $2.99 with tax, and each sunflower plant costs $2.79 with tax. Jacob has $43.85 to purchase the flowers. If he buys 10 petunia plants, which inequality can be used to find s, the number of sunflower plants that Jacob can purchase?
A.
10($2.99) + $2.79s < $43.85
B.
10($2.99) + $2.79s > $43.85
C.
10($2.99 + $2.79s) > $43.85
D.
10($2.99 + $2.79s) < $43.85
Answer:
A.
10($2.99) + $2.79s < $43.85
Step-by-step explanation:
Hope it helps you in your learning process.
The cumulative frequency diagram shows the times taken by the members of two
different clubs, The Braineys and The Cleverites, to complete an intelligence test.
Cumulative
a) Find the median and the
frequency
interquartile range for The Cleverites
80
60
b) State which club, on average, was
slowest at completing the test.
Give a reason for your answer.
40
The Cleverites
The Braineys
20
10
20
50
30 40
Time, in minutes
Answer:
a) median=25 interquartile range=19
b) The Braineys as the median is 32 compared to 25.
Step-by-step explanation:
The median and interquartile range for the cleverites are : 25 and 20 respectively.
The slowest club on average is the Braineys
From https://brainly.com/question/14724605?referrer=searchResults :
The median value for the cleverites :
The Median is the time at the midpoint of the frequency curve :
Median frequency = Cummulative frequency / 2
Median frequency = 80 /2 = 40
Tracing to the intersection point on the curve and reading the x - value at the point of intersection ;
Median for the Cleverites is 25The interquartile range = (upper quartile - lower quartile)
Upper quartile = 3/4(Cummulative frequency) = 3/4(80) = 60
Upper quartile = 35 minutes
Lower quartile = 1/4(80) = 20
Lower quartile = 15 minutes
Interquartile range = (35 - 15) = 20 minutes
To obtain the slowest club on average, we could use the median :
Median for Cleverites = 25
Median for Braineys :
1/2(80) = 40
Time on the x axis corresponding to y = 40 is 32
Comparing the median values :
32 > 25
Braineys > Cleverites ;
The slowest on average at competing is Braineys as they have a higher completion time.
Learn more : https://brainly.com/question/14724605
What is the area of a rectangle with a length of
418 feet and a width of 2 feet? (HURRY PLZ I'M GETTING ASKED A QUESTION)
Answer:
8 1/4
Step-by-step explanation:
Answer:
836 feet
Step-by-step explanation:
For area, it is length times width, so in this case it would be 418 times 2.
Label each statement as True or False.
Answer:
1. False
2. False
3. True
Answer: 1. False 2. False 3. False
Step-by-step explanation:
All circles are similar Figures can be proven similar if one, or more, similarity transformations can be found that map one figure onto another. Consequently, a circle is defined by only one length - the radius.
can someone do this quick! I need the volume!!
Answer:
1125000
Step-by-step explanation:
just multiply them all
Answer:
i believe it should be 1125000
Step-by-step explanation: